(physics, archaeology, paleontology) A method of estimating the age of an artifact or biological vestige based on the relative amounts of the different isotopes of carbon present in a sample.

(archaeology) Helium dating.

(archaeology) a method of determining the age of rock that depends on the production of helium during the decay of various radioactive isotopes of uranium and thorium.

An organized event in which prospective romantic partners engage in a series of one-to-one meetings in a library, based around the topic of favourite books.

radiocarbon dating.

(archaeology) A technique used to date bones by measuring the amount of fluorine absorbed from the surrounding soil.

An organized event in which prospective romantic partners meet each other through a series of short one-to-one meetings

A business providing a service allowing people to meet each other for romantic outings.

Alternative spelling of speed dating

Synonym of enjo kosai